Telescope sight mount for firearms



A g- 19495 L. E. WHlfTEMORE 2,479,886

TELESCOPE SIGHT MOUNT FOR FIREARMS 7 Filed Sept. 25, 1948 5 Sheets-Sheet l Leslie E. Wkifiemm'e, INWVTOR.

MMviGv- Aug. 23, 1949. E. WHITTEMORE 2,479,886

TELESCOPE SIGHT MOUNT FO R FIREARMS 3 Sheets-Sheet 2 Filed Sept. 25, 1948 Lesiie E. Wiziiemore, INVENTQR.

HMXWJflL K JMMJ 1949; L. E. WHITTEMORE 2,479,886

TELESCOPE SIGHT MOUNT FOR FIREARMS Filed Sept. 25, 1948 3 Sheets-Sheet 3 93m E, iiiemre, i 1

Patented Aug. 23, 1949 2,479,886 rerssoees s ege oon's FOR FIREARMS Leslie Whittemore, Dorchester, Mass. imit n sen e??? 25, its? se ia iei ez fi 7 Claims. (o 11 2 This invention relates to breeoh loading top;- ejecting firearms and'particularly to firearmsoi type that are equipped with a telescope sight.

Such telescope sight, when in operative position, is situated directly over the open top for ejection opening of the receiver through which the empty shells are ejected, and one'of the objects of the present invention is to providenovel means by which when the bolt is moved backwardly into open position, the rear end of the telescope will be moved laterally to one side of the open top or the receiver so that it will not interfere with the ejection of the empty shells.

A further object of the invention is to provide novel means by which when the bolt is moved forward into closed position, it will automatically shift the position of the telescope sight from an inoperative position out of line with the open top or ejection opening of the receiver into an operative position.

A still further object of the invention is .to provide novel mean'sby which the telescope sight is locked in its operative position by the forward movement of the bolt.

" In the present invention the front end of the telescope is pivoted to the barrel of the firearm and the movement of the telescope from its op}- erative to its inoperative position and vice verse. is accomplished by swinging the rear end of the telescope laterally about its pivot point, such swinging movement of the telescope being de;- rived from the reoiprocatingmotion of the bolt.

In the accompanying drawings, wherein I have shown a selected embodiment of my invention,

Fig. 1 is a top'plan view of aportion of a shoulder arm having my improvements applied thereto and showing the telescope in operative position.

Fig. 2 is a fragmentary perspective view of the widened end portion oi the rear supporting bracket.

Fig. 3 is a side view of Fig. 1.

Fig. 4 is a view similar to Fig. l but showing the telescope in its inoperative position.

5 is a side view of Fig. 4.

Fig. 5 is a fragmentary plan view illustrating the rear end of the telescope in midway position.

'Fig. '7 is a plan view of the bracket supportf 'or the rear'end of the telescope.

' Fig. 8 is a side view of Fig. '7.

Fig. 9 is plan view of the cam track by which the telescope is given its swinging movement.

'Fig. 10 is side view of Fig. 9.

Fig. 11 is a perspective view of the clamping ring used for clamping the telescope to its' supporting bracketl' Fig. 12 is a perspective view of the guiding member for therear supporting bracket.

13 i anen ersie d s t on vi wer h am n-ears be of usnal construca; 11.29... dpd Wi h a mov ctly'over the open tituti ng the 3e nor; on ing'of the reat ne side of new.

hnb portion 9 through 'vot inin" that is' screw o the base said pivot pin extendangles 'totlfie barrel; The bracket 1 p 19;; u inwihichthe ie "'5 is received and said ring po tion has (in endin th rsi h a plurality aic e the telescope re'w threaded with scope leiple e nd of .t'hetelescope has B d r r l$ lr b9 tine b l i ii 'ie e ce 'e .m' the s m tng' lorachet 1, that is; aid isar s p 'is pro i d w the ring'portio'n l'l which encircles the telescope and is also provided with the clamping jaws l2 that have the taper screw thread onthe exterior to receive"th c l'ampf ri; 1L3.

The l i ili eetsf f i prov d w a widened end 'on' lfiwhich rests on agui dmg's'upbqrt 16 is secured to the receiver.

taster as The"member"l61s shown'as' having two side 3 vided with the inturned lip 22 which fits underneath the edge portion 23 of the part l9. By this means the supporting bracket I4 is prevented from vertical movement, but is permitted lateral sliding movement on the bridge portion l9 as the telescope swings laterally about its pivot H) in its movement from the operative position shown in Fig. 1 to the inoperative position shown in Fig. l and vice versa.

As stated above this swinging movement of the telescope is derived from thereciprocating movement of the bolt 4, and for this purpose the bolt has a cam member 24 secured to its upper face by means of screws 25, said cam member being provided with a cam rib 26 which is received in a notch 21 formed in the lip 22 of the rear supporting bracket. The cam rib 26 has a straight front portion 28, an intermediate cam portion 29, and a rear straight portion 30. When the bolt is in its forward or closed position shown in Figs. 1 and 3, the rear straight portion 30 of the cam rib 26 is occupying the notch 21 and the telescope is thereby held in its operative position extending parallel to the barrel l2. When the bolt moves rearwardly, the cam portion 29 acting on the side walls of the notch 2'! serves to shift the rear supporting bracket l4 laterally as shown in Fig. 4 thereby swinging the rear end of the telescope to one side of the receiver and uncovering the open top of the receiver for the ejection of the empty shell, such swinging movement of the telescope being about its pivotal axis.

The cam portion 29 is so disposed that it gives the rear end of the telescope its complete movement from operative to inoperative position during the first portion of the rearward travel of the bolt, and during the final rearward movement of the bolt, the straight portion 28 of the cam rib is operating in the notch 21.

The rear end of the telescope therefore, is

moved into its inoperative position early enough during the rearward movement of the bolt so as to give plenty of time for the ejection of the empty shell.

Means are provided for automatically locking the telescope in its operative position during the final forward movement of the bolt. For this purpose the cam rib 26 is provided at its rear end with a locking lug 3|, and the supporting member l6 as well as the widened part [5 of the rear supporting bracket M are provided with a locking notch to receive the locking lug 3|. The notch in the supporting member I6 is indicated at 32 and that in the supporting bracket at 33. These notches are so disposed that they come in- 2. A breech-loading top-ejecting firearm having a barrel, a receiver having an ejection opening at the top for the ejection of empty shells, a reciprocating bolt, a telescope sight, means pivoting the telescopic sight at its front end to the barrel to swing laterally about a vertical axis between an operative position parallel to the barrel and with the rear end over said ejection opening and an inoperative position having an angular relation to the barrel and with its rear end at one side of said ejection opening, and means actuated by said bolt to give the telescope sight its swinging movement into both its operative and its inoperative positions.

3. A breech-loading top-ejecting firearm having a barrel, a receiver having an ejection opening at the top for the ejection of empty shells, a reciprocating bolt, a telescope sight, means pivoting the telescopic sight at its front end to the barrel to swing laterally about a vertical aXis between an operative position parallel to the barrel and with the rear end over said ejection opening and an inoperative position having an angular relation to the barrel and with its rear end at one to register with each other when the telescope is in its operative position, and hence during the final forward movement of the bolt, the locking lug 3| enters the two alined notches 32, 33 thereby locking the telescope in its operative position.

I claim: 7

1. A breech-loading top-ejecting firearm having a barrel, a receiver having an ejection opening at the top for the ejection of empty shells, a reciprocating bolt, a telescope sight, means pivoting the telescopic sight to the barrel to swing laterally about a vertical axis between an operative position parallel to the barrel in which it is over said ejection opening and an inoperative position having an angular relation to the barrel in which it is at one side of said ejection opening, and means actuated by said bolt to give the telescope sight its swingingmovement into both its operative and inoperative positions;

side of said ejection opening, a supporting bracket secured to the rear end of the telescope sight, and a cam rib carried by the bolt and cooperating with said supporting bracket to swing the telescope sight about its pivot between its operative and inoperative positions.

4. A breech-loading top-ejecting firearm having a barrel, a receiver having an ejection opening at the top for the ejection of empty shells, a reciprocating bolt, a telescope sight, means pivoting the telescopic sight at its front end to the barrel to swing laterally about a vertical axis between an operative position parallel to the barrel and with the rear end over said ejection opening and an inoperative position having an angular relation to the barrel and with its rear end at one side of said ejection opening, a supporting bracket secured to the rear end of the telescope sight, a guiding support secured to the receiver and on which the supporting bracket rests for sliding movement, and a cam rib carried by the bolt and cooperating with the supporting bracket to swing the telescope sight about its pivot.

5. A breech-loading top-ejecting firearm having a barrel, a receiver having an ejection opening at the top for the ejection of empty shells, a reciprocating bolt, a telescope sight, means pivoting the telescopic sight at its front end to the barrel to swing laterally about a vertical axis between an operative Position parallel to the barrel and with its rear end over said ejection opening and an inoperative position having an angular relation to the barrel and with its rear end at one side of said ejection opening, a supporting bracket secured to the rear end of the telescope sight, a guiding support secured to the receiver and on which the supporting bracket rests for sliding movement, and a cam rib carried by the bolt and cooperating with the supporting bracket to swing the telescope sight about its pivot, said supporting bracket and guiding support having inter-engaging portions which hold the swinging end of the telescope sight against vertical movement.

6. A breech-loading top-ejecting-firearm having a barrel, a receiver having an ejection opening at the top for the ejection of empty shells, a reciprocating bolt, a telescope sight, means pivoting the telescopic sight at its front end to the barrel to swing laterally about a vertical axis between an operative position parallel to the barrel and with the rear end over said ejection opening and an inoperative position having an angular relation to the barrel and with its rear end at one side of said ejection opening, a supporting bracket secured to the rear end of the telescope sight, a guiding support secured to the receiver and having an extended free edge, said supporting bracket having a lip engaging the underside of said free edge, said lip having a groove, and a. cam rib carried by the bolt and operating in said groove whereby the telescope sight is swung about its pivot by the forward and backward movement of the bolt.

'7. A breech-loading top-ejecting firearm having a barrel, a receiver having an ejection opening at the top for the ejection of empty shells, a reciprocating bolt, a telescope sight, means pivoting the telescopic sight at its front end to the barrel to swing laterally about a vertical axis between an operative position parallel to the barrel and with the rear end over said ejection opening and an inoperative position having an angular relation to the barrel and with its rear end at one side of said ejection opening, a supporting bracket secured to the rear end of the telescope sight, a cam rib carried by the bolt and cooperating with said supporting bracket to swing the telescope sight about its pivot between its operative and inoperativ positions, said supporting bracket having a locking notch, and a locking lug carried by the bolt and arranged to enter said locking notch when the bolt is in its forward position thereby to lock the telescope sight from swinging movement.

LESLIE E. WHITTEMORE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS- Number Name Date 2,115,618 Carl Apr. 26, 1938 2,425,130 Shelley Aug. 5, 1947 2,451,266 Whittemore Oct. 12, 1948 

